Has to report Mom to department of public safety.

She backed into a ditch and has cataracts. This is very difficult to deal with. My moms retaliation has begun. She threw a fit saying that my name was on the paperwork as the one who reported her driving habits. When I told her about seeing her back into a ditch she went ballistic and started falsely accusing me of giving medication to my nephew. What can I do to defend myself and be there to help her. Or who can I get to help her since she does not seem to want to help herself? Mom has sores on scalp and she constantly picks at it. She says she can't stop. She smells bad as though she is not taking a bath. When I mentioned taking a bath she says she does not feel like it. Who can help with my mom